Centrifugal fuse



Feb. v22, 1927.

,Y Y 1,618,944 B. PANTOFLICEK CENTRIFUGAL FUSE I Original Filed June l, 1925 36 v y @inning Patented Feb. 22, i927.

onn'rarrnear. FUSE.

l reisen Original application i'led June 1, 192.5, Serial No. 34,248, and in Czechoslovakia lTune 9, 1924. Divided. Y

and this application led July rfhis iuveiition relates to a centrifugal V'fuse for shells which rotate about their longitudinal axis, in which weights are causedV by centrifugal force to perform an outward radial movement or-a rotary motion about an axis at right angles to the axiso't rota-A caused to perform a return motion. Buring.

this return motion the weights move beyond the original position and thereby cause the needle to be released, which liesin theaxi oi" rotation ot the shell.

Y The present application is aV division et'v my copending application Serial #34,243, tiled June 11925. y

TheYaccompanying drawing illustrates in longitudinal section a form of construction according to the invention.

is a body containing the centrifugal weights and the striker. The centrifugal Weights 26 are lixed on a disc 27 having a recess 28. Between the disc 27 and the body 25 a securing ball 23 is provided, which engages in a recess 30 ot the disc 27 and in a slot 31 of the body 25. The slot 3l coininunicates with a hole 32. The disc 27 is rotatable about apin 33, which is at right angles to the axis of the shell, and is forced by the spiral spring 34 in the counter-clockwise direction and keeps the centrifugal weights 26 in a position inclined to the axis of the shell. A rotation of the disc 27 by the torsion spring 34 is prevented by the securing ball 23 which, as it engages partly in the recess 30 of the disc 27, is pressed against the end oic the slot 3l, thus forming an obstruction to the rotation of the disc,

The arrangement operates in the following mannen-Through the rotation of the shell during its flight the centrifugal weights 26, the centre of gravity et which does not lie in the axis otl rotation of the shell, will be exposed to centrifugal force and will seek to move as far as possible away from the axis of rotation. The centrifugal weights 26 will turn until their centres of gravity lie in a plane at right angles to the axis or" rotation. In this rotary inoion of the centrifugal weights the disc 27 will be turned in the clockwise direction and the securing ball 23, which is carried along 24, 1926. Serial No. 124,768.

by the recess 30, will come in front of the opening 32 and will be thrown out of rthe body 25 by centrifugal-force. As the ball 23 no longer lies in the path ot the disc 27 the latter will `be no longer secured.y On the Vimpact ot the shell, the latter will cease to rotate and the centrifugal weights 26 no longer be acted on byrcentrii'ugal force. The torsion spring 34 will thereupon turn the i'svf. o t" 4- 1 k 7"@ 1'1 t' i i..U i i.. ne eoumei c oe une ciiec ion. Through this rotation the recess 23 or the disc will come in Airont of the striker mechanism. yihe head 35 of the securing` pin 36, which has up to this point rested against the periphery of the disc 27V and secured the striker, will be torcedinto the recess 23 by the spring 37 and the securing balls 38 ot the striker 39, vas they are no longer obstruetedby the pin 36,.will enten the holes providedfor the purpose and thus release the striker 39, whichV will thereupon be thrown, also by the power stored inthe spring 37, Aagainst the detonator, igniting the same. y

In place of the centrifugal weights 26 being fixed on a disc 27, a .single elongated member may be used, which is inclined to the axis of rotationV of the shell and is ro tatable about an axis at right angles to the axis ot rotation ofthe shell.

lhat I claim is l. A centrifugal fuse for shells which rotate about their longitudinal axis, comprising a fuse body, a plurality of centrifugal weights forming a balanced system, means capable ot storing energy under the action ot' the centrifugal weights, a striker, means for securing the centrifugal 'weights in an inoperative position and means for prevent ing vthe striker from comin@ into operation until the centrifugal weights have been sufeiently moved by the stored force in an opposite direction to that of the centrifugal torce after the latter' has ceased to act.

2. A centrifugal fuse as claimed in claiin the shell, so that, on the shell rotating, {ne}7V seek to set themselves into e planeet right ingles tothe :wiser: rotation of the shell A centrifugal linee as eluinied in cla' n l, in which the balanced System of eentrii iig'al weights is cupo-ble of rotation Within the 'fuse body about zin axis :it right anglesV to Y,

' the inse belly about iin axis at right angles the axis o rotation ot' the shell and having :i rotatable (hse, (24), to which the Cen-V trifugal weights (26)' are hired. the momie of Storing energy consisting of a, toreion spring' (Bal)v which tende to rotate the seid (lie Lind bringit into' such f. position that the centr'iiviigal weights on the saine lie eceentrieally lo the axis of rotation of the Shell. Y Y

6. A' centrifugal, fur-'e as, elaiinfrl in claim l in which the balanced system of oentrii'u gul Weights is capable ot rotation Within the fusewbody about :in exif; at right angles; to 4the .axis of rotation of the Shell and having :t rotatable disc (27), to which the centrifugal Weights (26)V are xed, the means of storing energy consieting of a torsion spring'(3ll), which tends to rotate the Said dieje und bring it into such :1 position lhetpthe oentrilfngtl Weighteon the l, in which the belonged, Syptein ol Centrifu- Qiil weights is carpa-ble olf rotation Within onof shell and l'izwii' l v vto which the entz'ijffnggzz .jxeipjbts Alli@ l'ixed, the ineens of Qtoring energy consisting of u torsion spiing (3l-l, which tends to rotate the seid (lite mtl bring` it into Such ay posh tion t'l'ijfit the Centrifugal Weights on*V the suing-x live eeeentriezrllyto the axis of rotation he shell in combination with :L securing bolt for the striker, the ,CliSQ (72,7) hav; ing :i (38)"10 receive the head (35) of the spurl securing bolt, as :uid for the purl'o'tlie wie el! rota pose set forth.

ln testimony xvlileofq` have signec'l my neme to thi@ Speeieatlon.

BQHDAN PNTOFLEK 

